IKAROS solar sail deployment Friday and Saturday

[bananas]

http://www.planetary.org/blog/article/00002519/

Lou Friedman is "our man in Japan" to watch IKAROS sail deployment
Jun. 3, 2010 | 14:58 PDT | 21:58 UTC

Planetary Society Executive Director Lou Friedman is now in Japan, joining the rest of the IKAROS team to watch the eagerly anticipated deployment of its solar sails. According to Lou, the sail deployment is scheduled for tomorrow and Saturday at around 13:00-17:00 UTC (between 6 and 10 a.m. Pacific time). I'll be staying close to my computer over the next couple of days to watch and wait for updates.

The latest news from the IKAROS blog is exciting. Yesterday, the deployment motors were checked out, and appeared to be working well. Here's a diagram that will help you understand what I'm talking about. The deployment motors are connected to the black bars that cross the silver folded sail material. To deploy the sails, the spacecraft spins, sending the tip masses (deployed on May 28) outward. Then the black bars, referred to as "stopper (rotation guide)" in the diagram below, driven by the deployment motors, are slowly rolled around the cylindrical spacecraft, allowing the sail material to be pulled outward by the tip masses, unrolling in a slow, controlled way. When this stage of deployment is complete, the sails will still be accordion-pleated.

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We've been getting quite a few inquiries from press about IKAROS and the other JAXA missions in the news just now, Hayabusa and Akatsuki, so I've put together a page on our site with links to most of the sources that I have been using for information on JAXA's deep-space missions, in the hopes that it'll help bring greater worldwide attention to the exciting current events in Japanese exploration of our solar system!